Out of stock
SKU: 170852
UPC: 840442502256
MPN: 55A830B-AB
The CMMG 55A830B-AB Dissent BR4 5.56 NATO rifle is a purpose-built modern sporting rifle engineered for shooters who demand reliability, ergonomics, and modularity in a compact package. Chambered in 5.56 NATO with a 16.1-inch barrel, this rifle bridges the gap between tactical carbines and practical home-defense platforms, making it suitable for law enforcement training, civilian sport shooting, and duty applications.
The Dissent platform represents CMMG's commitment to delivering AR-pattern performance with refined controls and user-focused design that resonates with both experienced operators and shooters entering the tactical rifle space. Built on CMMG's proprietary AR-15 architecture, the Dissent BR4 incorporates a mid-length gas system optimized for the 16.1-inch barrel length, delivering consistent cycling and reduced recoil impulse compared to carbine-length systems.
Finished in durable Cerakote coating, the rifle resists corrosion and abrasion in harsh field conditions—critical for rifles seeing regular use in training or operational environments. The compact 39.6-inch overall length makes the platform maneuverable in confined spaces such as vehicles, structures, or dense tactical scenarios, while the 11.8-pound weight distribution allows extended shooting sessions without fatigue.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
